Graphics: 9/10 - Excellent graphics for basic! The title screen is a nice touch, and the actual playing screen is excellent.
Speed: 10/10 - When the author says it runs smoothly, he is 100% correct. This game has speeds most basic games cannot achieve
Controls: 7/10 - And this is where I have a problem with the game. The aspect of having Guitar Hero on a calculator is awesome, but the keys to be used could have been better selected. Instead of using keys down the side of the calculator, using the Graphing Keys (F1-F5) would have suited the game MUCH better. The control aspect is really my only gripe with this game.
Gameplay: 10/10 - Despite the controls, this game still plays fluently and is a good way to pass a few minutes here and there, or to pass some time after a test. With 7 songs playable off the bat, and an unlockable song, you'll find yourself enjoying this one for a while.
Fun: 10/10 - I wish I hadn't told my friends I had Guitar Hero on my calculator. I often find myself fighting to get it back. This game is almost as fun as its console counterpart, but in compact, monochrome form.
Overall: 46/50(A-) - This game is a MUST-HAVE for any owner of a TI-83/84. The only issue is the controls, which if the author re-releases this with the controls moved up to the top, this one will be near-perfect. Overall, if you are a GH fan, or just are looking for a fun game to pass the time, this is a game you should download.